Demountable rim for resilient tires.



O. W. ORAMERW DEMOUNTABLE RIM FOR RESILIENT TIRES.

APPLICATION FILED APR. 12, 1911.

1,095,385. Patented May 5, 1914.

Z SHEETS-S HEET 1.

Half

iwcenwr Charles ZZZ Cramez;

,c. w. GRAMER. DEMOUNTABLE RIM FOB RESILIENT TIRES. APPLICATION FILEDAPR. 12, 15 311.

1,095,385. Patented May 5,- 1914.

2 BHBETS-8HBBT 2.

Imam 501* TO'aZZ wIw-m it may concern:

- Be it known that I, CHARLES IV. CRAMER, "of the'city of Scranton,county of Lacka-- 1 wanna, and State {of Pennsylvania, have invented.certain new and useful Improve- .ments in =Demountable Rimsfor Resilientl-ires,jwhereof the following is a specification, reference being had tothe accompanyv: 1n%draw1ngs. A

,UNITED sTa'rEs arana OFFICE.

CHARLES w. CRAMER, or scnanrom'rnivnsrtvanm,

I DEMOUN'IABLE Rm FOR RESILIENT TIRES.

he: invention relates to newand useful improvements in demountable rimsfor resilienttires, for use in connection with vehicles,.: and:' moreespecially. motor proipelled vehicles".

objectof theinventionis' to provide pant-improved construction ofdemountablc wherein the tire rim is positively held on 'the telly rim bylocking dogs which are w'spaced about the felly, -wh1chdogs may bereadily. withdrawn so as" to permit lateral movement of the tire rim andthe demount- 3 ing of the same.

holds the parts firmly in locked position,

further object of the invention is to prov/idea construction of theabove char-- acter" with a secondary locking nut which 1 These and otherobjects will-in part-be "obv-ious, and will in part be hereinaftermorefully described.

In the drawings which show by wayiof illustration, one embodiment of theinvention; Figure I, is}! side view of a vehicle 1 thereto. 5 II, II,ofFig. I. 'Fig; III, is a view similar to Fig. II showing the locking}dog re.-

wheel .having my improvement applied F1g."'II, 1s a section on the linemoved from engagement withthe tine rim.

' Fig. IV. is a detail showing the retaining shoulder for the lockingnut. 4

In carrying out my invention, I have provided a vehicle wheel, whichconsists of a hub 1, on which are mounted spokes 2,

carrying at their outer ends a folly 3. The

felly 8, is provided with the usual metal side plates 4, 4, and with arim 5, which is 'fiormed at one side with a flange 6, which extendsentirely about the rim. On the other side of the telly rim the flange isomitted, so that a delno-untable rim 7, may

be easily slid on to the felly rim, and seated against thefiange 6, onsaid telly rim.

' In' order to facilitate the placing of the tire 'rim on .the follyrim, I have formed the telly rim so that the sametapers from aint'adjacent the flange (1' to the other side thereof, and I have al/lo.formed the Specification or Letters Patent.

. Patented May 5, 1914;.

Application filed April 12, 1911. Serial No. 620,543.

tire rim 7, so that the same tapers in the opposite dlrection. Thistapering of the rims allows the valve stem to be inserted in. theopening in-the tire rim, after which the folly rim may be swung intoplace. A v resilient tire 8, is attached to the demountable rim in anyof the well known ways,.and in placing the tire on the vehicle wheel,the demou-ntable rim carrying the tire, is placed'on the fellyrim andsecured thereto by my improved locking means.

The means for locking the tire rim on the folly rim. as herein shown,consists of a plurality of locking devices 9, which are spaced about thewheel as shown. in. Fig. l.

- opening'jn the folly rim is slightly larger thanthe opening in thetire rim, as shown in Figs. II, and III, so that thelocking dog may beclamped against the wall in the opening in the tire rim, withoutcontacting with the wall in the opening in the fellyrim. The locking dogis inserted through the openingsabove referred to, and its outer endbrought; to a position substantially flush with the outer face ofthe-tire rim.-

-. The edge of the openingin the-tire rim is preferablycut away to forma seat 13, for the projecting wedge or too 1.1. The felly 3,.is providedwith a'recess M, which leads from the pocket 12, to the outer faceof thefolly. A screw 15, is located in said recess, and is formed with a head16, which isv slightly larger than the recess at the ou-ter face of thefolly, so that said head will engage the face of the folly: The lockingdog 10, is threaded and the screw or bolt 15, is formed witha'corresponding. thread,-

so that by turningthe screw or bolt, the dog may .be brought intolocl'ringengagement with the tire'rim as above: noted, and will clampthe t-ire rim against the flange 6, on the felly rim. A-wear plate 30,"1s inserted 'in said pocket and engages the mner wall of the pocket. Thewear plate prevents undue wear on the folly from the dog 10.

The screw-or bolt 1,5,is. preferably formed,

with a squared head 18,,adaptedto receive a suitable wrench for trimmingthe same.

The recess 14:, as clearly shown in Figs. H, and III, is tapered so thatthe screw 15, may swing about its head as a pivotal center, and thelocking dog 10, lowered from the opening in the tire rim so as to allowthe tire rim and tire mounted thereon,

to be moved laterally from the telly rim. I preferably cut away thefelly in forming the pocket 12, so that the metal side plate 4, formsone wall of the pocket. This prevents the dog from catching in thewooden parts of the fell and allows a free movement of the dog into andout of locking position. As a means for fnrthersecuring the tire rim onthe telly rim, I have pro vided a locking not 19, which is adapted to hethreaded on to the outer end of the screw 15. This not has an enlargedcircular base or flange 20, which extends into a recess or groove 21.,in the tire rim, When the locking dog is positioned to engage the tireriin. The not 19, will clamp the side of the fell and the Wall of thegroove or recess 21, and aid the locking dog in holding the tire rini onthe telly rim.

In order to aid in holding the locking dog withdrawn to inoperativeposition, i have formed the metal side a projecting stud 23, which is solocated as to engage an annular groove 24, in the lociing face of thenut '19, when said locking screw or bolt 15, is moved to a position towithdraw the locking dog from the opening in the. tire rim. By thismeans the locking dog may be readily secured in the position stated.

In order to aid in holding the locking screw or bolt and the locking dogin opera.- t-ive position, that'is, with the locking dog --properlyplaced against the tire rim, 1 have formed the metal side plate 4, Witha retaining ridge 25, which will engage the hange 20, of the locking nut19, as clearly shown in Fig. IV. This shoulder prevents the not workingup and thus holds the locking dog in proper position to engage the tirerim. To aid in registering the open- .ings in the tire rim with those inthe fell I have formed the flange 6, with a slot or recess adapted toreceive a lug 27, formed on the demountable rim, which slot and lug arelocated in a predetermined position relative to these openings.

In the operation of my device. the screw 15, is turned so as to releasethe locking dog 10, and position the parts as shown in Fig. Ill. Thetire rim, with the tire thereon, is placed over the valve stem, with thelug 27, in engagement with the recess formed in the flange 6. The otherpart of the tire rim is then slid or swung laterally into engagementwith the telly rim. and seated against the flange 6. The nut 19 plate 4,with turned sufficiently to release the same from the stud 523, and thelocking bolt is then swung about the head thereof a pivotalcenter, untilthe parts thereon are named to the position shown. in Fi II. This canrice the locking dogont through the recess in the tire rim, and theturning of the lockmg screw will cause the dog to clamp the tire rimfirmly against its seat on the fell rim. The locking nut 19, is turnedagainst the face of the folly, and also against the tire rim, and thussssists in looking the tire riin on the telly ri .i. In removing thetire rim, the operation is substantially the rererse of that abovedescribed. 1

It is obvious that minor changes 1n 3h said recess, and mounted on thescrewand adapted to lock the rim against lateral more ment in theopposite direction, one end of saidscrew being loosely pivoted atoneside of the niemher'to permit the other end thereof to he swunginwardly to disengage the dog from the rim.

In a dcnionntahle vehicle rim, the com hination with a folly formed witha trans verse recess, of a telly rim having a stop on one side thereof,a tire rim adapted to seat on said telly rim and engage said stop, and alocking device for said tire rim, including a dog constructed to engagesaid rim and lock the same against the stop on the fell rim, and anadjns ing screw for each dog, the dog and screw bein disposed in therecess of the folly, one en of said screw being loosely pivoted at oneside of the inen'ahcr to permit the other end thereof to he st-vnn"inwardly to disengage the dog from the rim.

3. In a denionntable vehicle rim, the com bination with a folly; a tellyrim having a flange on one side thereof; a tire rim carry mg a resilienttire adapted to seat on said telly. rim and'engage said flange; of apinrality of locking devices each including a locking dog, constructedto engage said the rim and hold the same seated against the.

lid

lit-fl adapted to be engaged by said toe of the locking dog.

4. In a demountahle vehicle rim; the combmatlon with a telly; a fellyrim having a flange on one side thereof; a tire' rim adapted to seat onsaid 'felly rim and engage said flange, said tire rim and said felly rimhaving openings formed there-through between the side edges thereof; alocking dog adapted to extend through said opening and en:

, on one side thereof; a'tire rim adapted to seat on said felly rim andengage said flange;

said tire rim and said folly rim having openings formed there-throughbetween the side edges; a locking "dog adapted to extend through saidopenings and engageisaid tire rim'for holding the same seated againstsaid flange on the folly rim; a screw threaded through said locking dand locatedin the recess formed in the'fel said felly having a pocketformed therein to receive said locking dog; and'a locking nut threadedon.

said screw and engaging the outer face of the felly; said locking nuthaving a flange which extends into a groove in the tire rim forassisting the locln'ng bolt in holding the tire rim' on the telly .tire.

6. In a demountable vehicle rim; the combination with a felly; a fellyrim having a flange on one side thereof; a tire rim adapted to seat onsaid felly rim and engage said flange; said felly having a pocket formedtherein and a tapered recess extending from the pocket to the outer faceof said felly;

said tire rim and felly rim having openings" formed therein registeringwith said pocket; a locking dog located in said pocket and adapted toextend through said opening and engage the tire rim; a headed screwhaving a threaded engagement with thelocking dog, a nut engaging theouter end of the screw and bearingagainstthe outer face of the telly;said nut having a flange adapted to extend into a groove formed in thetire rim; said lockin do having a laterally projecting toe an sai tirerim having a recess form--.

1 'inga wall adapted to be engaged by said wedge face ofthe lockingldog.

icle rim,the combination with a felly havin a plurality of .7. In ademountabl'e ve transverse recesses formed t erein, of a tapered follyrim having, a flange at the enlarged side thereof, a reversely taperedtire rim adapted to seat on] said fe1l y rim, and engage saidflange,-and a plnrahtyof locking devicesrespectively located in said recesses, each device including a locking dog constructed to engage saidtire rim and hold the same seated against the flange of the telly rim,and a screw for each locking dog, said screw having one end looselypivoted at one side of the felly to permit the other end thereof to beswung inwardly to disengage the dog from the rim.

8. In a demountable vehicle rim, the combination with a fellwa felly rimhaving a flange on one side thereof; a tire rim carrying a resilienttire adapted to be seated on said felly rim and engage said flange; of aplurality of locking devices, each includin a locking dog constructed toengage said tire rim and hold the same seated against the flange on thetelly rim, a screw for each locking dog, a locking nut for each screw,said screw being connectedtothe felly so as to be swung to withdraw thelocking dog from the path of lateral movement of the tire rim, saidfelly and said locking nut having coiiperating locking devices, forholding the screw withthe locking dog withdrawn from the path ofmovement of the tire rim.

9. In a demountable vehicle rim, the combination with a felly, a fellyrim, having a flange on one side thereof; a tire rim carryin .aresilienttire adapted to seaton said feily and engage 'sa-id flange; ofa plurality of locking devices each including a locking dog constructedto engage said tire rim and hold the same seated against the flange onthe folly rim, a screw for each locking dog, a locking nut for eachscrew, said screw being connected to theflly-Eg as to be swung towithdraw the locking dog from the path of lateral movement of the tirerim, said felly having a retaining ridge engaging the flange on thelocking nut'for holding the screw with the locking dog in normalposition'to engage the slidfilder on the tire rim.

10. Ina demounta-ble vehicle rim, the combination with a folly; of afelly rim having a flange on one side thereof; a tire rim carrying aresilient tire adapted to seat on said felly rim and engage said flange;of aplurality of locking devicesfeach including a locking dogconstructed to engage said tire rim and hold the same seated against theflange onthe folly rim; a screw for each locklng device; said fellyhaving a recess to receive the screw, which recess is shaped so as toallow the screw to be swung to withdraw the locking dog from the path oflateral movement of the tire rim; said locking the locking dog; one ofsaid rims having a recess, and the other of said rims -having a lug forengaging the recess for registering the openings in the rims, throughwhich the locking dogs extend.

flange, a tire rim adapted to seat on the rim and engage said flan e,said-tire rim having an opening dlsposec on the side opposite the flangeon the feliy rim and exterior of said felly,.:1 SCl'GW disposed in therecess of the fell yjand having the end there of opyesite said openingloosely pivoted t0 perm t the end thereof adjacent said opening swinginginwnrdlyg'a dog carried by said screw" for engagement with the tire,zin1to lock the letteregninst the flange of the telly rim, end "a nuton the end of the screw opyoslte the fulcrum thereof and provided jvitha "flange extending into said opening nd engaging one wall thereof toclamp the the rim. against the flange.

12. In t Elemounteble vehicle 'rixn the combination o e felly; a feliyrim having a neeegee the felly; a nut on the bolt having a flange extendng into said opening andengaging one wall thereof to clamp the tirerunagainst the flange; and a shoulder carried by the felly and engagingthe flange of the nut to prevent lateral movement of the bolt and thedisengagement of the flange from the wall in the tire rim.

In testimony whereof, I have hereunto signed my name at Philadelphia,Pennsyl- Vania, this thirtieth (lay of March, 1911.

1 CHA-XRLES W. CRAHER. Witnesses:

JAMES H. BELL, E. L FULLERTON.

